#schoolbag = ['语文书','数学书','练习册','笔盒']
#schoolbag1 = schoolbag
#print(schoolbag,schoolbag1)
#schoolbag[0] = '英语书'
#print(schoolbag,schoolbag1)

# schoolbag = ['语文书','数学书','英语书','漫画书']
# length = len(schoolbag)
# i = 0
# while i < length:
#      print(schoolbag[i])
#      i += 1
#
# schoolbang = ['语文书','数学书','英语书','漫画书']
# for item in schoolbag:
#     print(item)